GB/T 12459  弯头 DN 100-Ⅱ-690ELÂ�èÂ�

DN 100-Ⅱ-6 90ELÂ�èÂ�

DN 1150-Ⅱ-5.5 CRS00 MF0-s/F7m0 R

WN 80(B)-16 RF S=4.5F S=8RF

wn500-150RF 9d= &

BL300(B)-25RF0

WN25(B)-100FM/

WN500-600 MRFF6/0( RFFG/T20RF S

WN 80(B)-16 RFpam2*18J25=44040SFM06F85=200 rf.2

WN 80(B)-40 RF Sch10S1T2061